<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>深拷贝</title>
</head>
<body>
    
</body>
</html>
<script>
//1.循环，递归
    function copyObj(obj) {
        var obj2 = Array.isArray(obj) ? [] : {};
        for (var key in obj) {
            // if(typeof obj[key]=='object'){
            //     obj2[key]=copyObj(obj[key])
            // }else{
            //     obj2[key]=obj[key]
            obj2[key] = (typeof obj[key] == 'object' ? copyObj(obj[key]) : obj[key])
            //}

        }
        return obj2;
    }
    console.log(copyObj([1,3,{age:20,sex:false}]));
</script>